{
  "id": "nucl-th/0104070",
  "version": "v1",
  "published": "2001-04-24T08:49:45.000Z",
  "updated": "2001-04-24T08:49:45.000Z",
  "title": "Status of Nucleon Resonances with Masses $M<M_N+M_π$",
  "authors": [
    "R. Beck",
    "S. N. Cherepnya",
    "L. V. Fil'kov",
    "V. L. Kashevarov",
    "M. Rost",
    "Th. Walcher"
  ],
  "comment": "4 pages, 2 figures, LaTeX with ws-p8-50x6-00.cls. Talk presented at the NSTAR2001 Workshop, Mainz, Germany, March 7-10, 2001",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We discuss different interpretations of peaks observed a few years ago by Tatischeff et al. in missing mass spectra of the reaction $pp->pi^+pX$, which were declared as new exited nucleon states with small masses. A study of the possible production of such states in the process $\\gamma p->pi^+N^*->pi^+ +\\gamma\\gamma n$ by analyzing the invariant mass spectrum of $\\gamma\\gamma n$ is proposed. It is shown that the data, obtained recently at MAMI-B, can allow to analyze this process and to get information about an existence of exited nucleon states with small masses.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-04-24T08:49:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "nucleon resonances",
      "exited nucleon states",
      "small masses",
      "invariant mass spectrum",
      "missing mass spectra"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 555821,
      "adsabs": "2001pen..conf..241B"
    }
  }
}